let id: any = "12";

id = "bnbb";

id = 123;

id = {};

console.log(id.length); // any缺点没有限制  不得已不要用 哈哈哈

// 定义数组
const infos = ["123", 33, {}, [], true, false];
const infoss = ["123", 33, {}, [], true, false] as const; // 元祖类型

let a: typeof infoss = ["123", 33, {}, [], true, false];

export {};
